Apparatus for displaying light advertisements



B. A. NIELSEN.

APPARATUS FOR DISPLAYING LIGHT ADVERTISEMENTS. 4 I

APPLlCATlON FILED NOV-.11. 1919.

1 107,564, Patented Feb. 21, 1922.

MENTOR Bram. Amer; NIELSEN, by ATTY.

,UNiTso STATES BER'IEL AaeEnIELsEN, or nvissnt, DENMARK.

ArrA RATUs FOR n sr AYrNe LIGHT ADVERTISEMENTS.

To all-whom it may concern:

Be it known that I, BERTE AAGE NIELSEN, a subject of the King of Denmark,'residing at 'K'vis'sel, Denmarlr,'have invented a new and useful improvement in Apparatus for Displaying Light Advertisements, and I do hereby declare the following to be a full,

clear, and exact description of the same.

' This invention relates to apparatus for displaying illuminated advertisement images. VThe apparatus comprises a rotatable picture carrying disk which is intermittently rotated by means of an electric motor, the disk being held stationary while the picture or pictures are displayed and moved when the next picture in a succession of circum- '1 ferentially arranged pictures is to be carried to the exhibition point. r The lantern or lamp illuminating the pictur'esis put out during'rota'tion of the picture carryingdisk. As many pictures as desired may be inserted inthe disk, andtheapparatus will completely'fulfil the purpose of giving an inter esting and effective advertisement.

A preferred form of the invention is shown on the drawing in which i i I Figure 1 is an elevation of the apparatus,

V Figure 2 is a plan View of the same,

Figure 3' shows part of a longitudinal section taken along the line a-a in Fig. 2,'and Figure 4 shows in elevation a detail including a divided slide ring for closing and interrupting an electric circuit.

Within the frame of the apparatus is arranged a small electric motor 1 which by means of suitable gear-wheels drives a crank 2 when the motor is supplied with current vwhereby a clock-work 3 forming another important part of the apparatus is wound up. The clock-work and the electric motor are adapted to alternately impart turning movement to the crank 2 in a manner which will be further explained below.

The crank 2 is pivotally connected to a pawl 4 engaging a ratchet-wheel 5 which is secured on a shaft 24 carrying at its forward end a picture disk 6. This disk is provided with a plurality of oircumferentially distributed apertures 7 in which transparent or translucent advertisement pictures may be inserted. When the crank 2 driven by the motor 1 is turned in a counter-clockwise direction from the position shown in Figure 3 the ratchet-wheel 5 is moved a tooth-distance in the opposite direction of rotation, wherey h P ure-di k 6 i a so tu ned so as to -isattached to the frame.

7 U Specification of Letters Patent Patentgd Feb, 21, 1922 Application filed November 11,1919. Serial No. 337,145.

bring the next picture to the displaying point, that is to a position in the line between the illuminating lamp 12 and the lens 8. Fixed to the free end of the pawl 4 is a cord 9 the opposite end of which runs around part of the circumference of a grooved roller 10 and is secured thereto. Fixed to the cord 9 and also to a point of the circumference ofthe roller 10 is one end of a tension spring 11 the other end of which It may be remarked here that the' roller 9 in operation performs only a slight angular movement to and fro. The roller 9 is carried by the windingshaftof the clock-work 3 and the spring 11 constitutes the motive spring of this clock-work. Thus it will be understood that when the crank 2 is rotated as described above the clock-work is wound. When the crank has performed approximately one half revolution so as to occupy a position substantially diametrically opposite to that shown in Figure 3 the supply of current to the motor is cut off, the disk 6 remains stationary during exhibition of the picture at the displaying point, and the stretched spring 11 is allowed to drive the clock-work 1 to slide along the back of the ratchet wheel tooth and engage the next tooth. When this 'and bring the tooth at the end of the pawl is performed the exhibition of the picture which in the meantime has been illuminated by the lamp 12, is finished and the crank 2 and disk 6 are again driven by the motor 1, whereas the flow of current through the lamp 12 is interrupted.

The alternating supply of current to the lamp 12 and the electric motor 1 is effected by means of a moving contact member in the shape of a slide brush 13 attached to the crank shaft and revolving with the same. This slide brush constantly engages or slides against a complete ring of electrical conducting material counter-sunk into an insulating member 14, the ring itself being not shown on the drawing. One conductor 15 of the two mains 15 and 21 is connected to this ring. The slide brush 13 also engages one or the other of two mutually insulated electrical conducting members 16 and 17 forming together a divided ring which is ar-v ranged on an insulating member 18. The contact element 16 is by means of a wire 20 connected to the lamp 12 and the contact element 17 is by means of a wire 19 conneoted to the motor 1, The lamp 12 is When the picture disk isbeing revolved the.

current flows from main 15 through the completer ring on insulating member 14:, slide brush 13, contact element 17 wire 19, motor 1,. wire 22 and lamp 23 to the other main- 21. The motor is then running as long as the bru'sh'13 slides against the contact element 17. When the brush leaves this-element the flow of current through the motor and the lamp 23 is interrupted, and the further movement of the brush in engagement with the other contact element 16 is efiected by the spring 11 which rotates the crank 2 in the manner described above. During this latter movement of the brush'the current flows from main 15 through the comlete contact ring on insulating member 14, iirush '13, contact element 16, wire 20 and lamp 12 to the other main 21. The picture .disk remains stationary and the picture at U the displaying pointis exhibited by being illuminated from the lamp 12.

When the spring 11 is bringing the pawl 4 to engage the next tooth of the ratchet wheel 5 it is desired that the crank 2 shall be released from the motor 1. For this pur. pose, a suitable clutch not shown on the drawing is inserted inthe moving parts between crank and motor, the clutch being constructed to transmit motion from the motor to the crank but to slip whenthe crank tends to rotate the motor. A similar clutch is arranged between the shaft for the roller 10 and" the other parts of the clock-work 3,- this latter clutch being adapted to slip when the spring 11 is strainedthrough the action of the crank 2.

Having thus 'liully describedmy invention, I claim as new and desire to secure by Letters Patent;

'1. An apparatus for displaying illuminated advertisement pictures, comprising a rotatable disk adapted to carry a series of circumferentially arranged pictures, a ratchet wheel revolving with the said disk, a pawl engaging the ratchet wheel and connected to a crank, an. electric .motorfor rotating said crank, an electric lamp for illuminating said pictures when atlthegdis: playing point, means for 'cuttingofl the'iflow;

of. currentthrough said lamp when. said disk is being' rota'ted, means for cutting ofi to a clock-work and serves for winding up.

the latter when thesaidcrank is driven by the electric motor, the clock-work -on the other hand serving to cause thepawl to en-. gage another tooth of the ratchetwheeljdur ing stand-still disk.

3. An apparatus for displaying illumi of the said electric. motor and 3 nated advertisement pictures as indicated in claim 1, in which a contact element rotating with the said crank moves in electric conducting engagement -wit lr two sationary contact rings one of which 1s a completering sulated parts, for the pur ose described;

In testimony whereof signature in presence of two witnesses.

r BERTEL AAGE NIELSEN.

lVitnesses: v i v p Vreco BLOM, C. V. Hoes'rno; w

have affixed my and the other divided-into two mutually in- 

